New accurate values of the imaginary part of the refractive index k of
polycrystalline ice at T = -22 degrees C are reported. The k spectrum
in the 1.43-2.89-mu m region was found to be in excellent agreement w
ith the most recent study, and the data in the 3.35-7.81-mu m range el
iminate the large existing uncertainty in the 3.5-4.3-mu m region.